New Waverly, Texas has a Humid Subtropical Climate climate (Köppen classification: Cfa). Average annual temperatures range from 14 °C (low) to 25.8 °C (high). Annual precipitation averages 1284.5 Millimeters. New Waverly is located in USDA Plant Hardiness Zone 9a. The growing season typically runs from the last frost around Feb. 11 - Feb. 20 through the first frost around Nov. 21 - Nov. 30.
| Month | Avg. Low | Avg. High | Avg. Precip |
|---|---|---|---|
| January | 4.4 °C | 16.1 °C | 107.7 mm |
| February | 6.3 °C | 18.2 °C | 86.11 mm |
| March | 9.8 °C | 22 °C | 98.3 mm |
| April | 13.6 °C | 25.6 °C | 96.52 mm |
| May | 18.2 °C | 29.4 °C | 124.46 mm |
| June | 21.7 °C | 32.7 °C | 122.17 mm |
| July | 22.9 °C | 34.2 °C | 84.07 mm |
| August | 22.7 °C | 34.8 °C | 107.7 mm |
| September | 19.9 °C | 31.7 °C | 102.87 mm |
| October | 14.5 °C | 27.1 °C | 127.51 mm |
| November | 9.1 °C | 21.3 °C | 117.09 mm |
| December | 5.4 °C | 16.9 °C | 109.98 mm |
| Annual | 14 °C | 25.8 °C | 1284.48 mm |
| Average First Frost Date | Nov. 21 - Nov. 30 |
| Average Last Frost Date | Feb. 11 - Feb. 20 |
| Average Days With Frost | 10-20 Days |
| Plant Hardiness Zone | Zone 9a : -6.7°C to -3.9°C |
| Plant Hardiness Zone - 2012 | Zone 8b : -9.4°C to -6.7°C |
| Current Drought Conditions | Normal |
| Köppen Climate Classification | Cfa - Humid Subtropical Climate |